neobjavljeni prilog sa skupa
Polymer reinfored plastics have been used for several decades for lightweight and high performance parts. Liquid composite manufacturing methods include soft and hard tooling procedures. Vacuum resin infusion has the ability to form relatively complex structures in large dimensions with only one rigid mould half and without the need of an autoclave. Mould filling can be challenging due to low fiber permability causing void formation and long infusion time. Permeability of the reinforcement is determined by fiber type, size and fabric architecture and has a major role in effective resin flow through the laminate. In this paper four stacking orders
(F1-F2-M-M-F2-F1, F2-F1-M-M-F1-F2, F1-M-F2-F2-M-F1, F2-M-F1-F1-M-F2) of different glass fiber fabrics (F1 – 300 g/m2 and F2 – 163 g/m2) and mats (M – 300 g/m2) are evaluated in linear resin flow experiment under constant pressure gradient. Flow front is monitored by optical measurement method in a transparent plate mould. Manufactured material is tested to determine the fibre volume and toughness. Stacking orders shows an effect on infusion time and toughness. Optical measurement method is practical way for monitoring the resin flow front in this experiment.
hybrid composites; infusion time; stacking sequence; vacuum assisted resin infusion
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